Automatic damper-regulator.



H. V. BARRON. AUTOMATIC DAMPER REGULATOR.

APPLICATION FILED MAY 15, 1913.

1,080,803, Patented Dec. 9, 1913.

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COLUMBIA PLANOGRM'II CO.,WASHINGTON. 04 c4 tin'rrnn stares rarnn'r @FFTQE.

HENRY V. BARRON, OF LITTLE ROCK, ARKANSAS.

AUTOMATIC DAMPER-REGULATOR.

To all whom it may concern Be it known that I, HENRY V. BARRON, a citizen of the United States, residing at Little Rock, in the county of Pulaski and State of Arkansas, have invented certain new and useful Improvements in Automatic Damper-Regulators, of which the following is a full, clear, and exact specification.

This invention relates to apparatus for automatically regulating the dampers or fuel supply valve of steam boilers.

One object of the invention is to provide an improved device adapted to automatically close a damper or valve when the steam pressure in the boiler reaches a predetermined point and also open said damper or valve when the pressure falls below the predetermined point due to the cutting oif of the draft or fuel supply.

Another object is to provide for controlling a plurality of dampers or valves, or both, so that they will be closed separately and in succession, and opened in the inverse order, according to the boiler pressure, each controlling device being actuated by a different pressure.

Further objects will become apparent as the description proceeds.

The invention will be first described in connection with the accompanying drawings, which constitute a part of this specification, and then more specifically pointed out in the claims at the end of the description.

In the accompanying drawings, in which similar reference characters are used to indicate corresponding parts throughout the several views: Figure 1 is a plan view of a series or battery of controllers with their governor weights arranged at different points on their levers so that each controller from left to right will require a little greater pressure to actuate it; Fig. 2 is a longitudinal vertical sectionalview through the right hand end controller or regulator taken on the line IIII of Fig. 3 and drawn to a larger scale, the position of the device before its operation to close the damper or valve being shown in solid lines and its position after operation in dotted lines; Fig. 3 is a transverse section taken on the line IIIIII of Fig. 2, and Fig. 4 is a detail view of one of the valve-carrying rods of the regulator, showing more particularly how one of the valve disks may be adjusted on its rod.

Referring more particularly to the draw- Specification of Letters Patent.

Application filed May 15, 1913.

latented Dec. 9,1913.

Serial No. 767,941.

ings, A designates a cylinder in which a piston B is fitted to be reciprocated by pressure from the steam boiler (not shown) to be controlled. This steam pressure may be fed by a pipe C, Fig. 3, to a live steam chamber D in one side of the cylinder casting. An exhaust steam chamber E is also formed in the cylinder casting above the chamberD and separated therefrom by a partition F. Through this partition two passages G and H lead from the chamber D to the chamber E. Each of these passages is of flared formation with restricted funnel shaped ports or valve seats opening on each chamber, and the passage H and its ports are larger than the passage G and its corresponding ports. The upper ports 9 and h which open on the chamber E, are preferably larger than the lower ports 9 and h which open on the chamber D. The passage G is in communication with one end of the cylinder by a branch passage G opening on said passage- G intermediate of its ports 9 and g. The passage H is similarly connected to the other end of the cylinder by a branch passage H.

Rods K and M are arranged to reciprocate to a limited degree in the passages G and H, respectively. Both rods are pivotally connected at their upper ends to a governor arm or lever P carrying an adjustable weight R. The rod K carries valve disks 7c and k arranged externally of the ports 9 and g respectively, and so spaced that when one of said valve disks closes its port, the other valve disk will be away from its port so as to leave the latter open. The rod M also carries two valve disks m and 4% adapted to separately close the ports h and h respectively, but these valve disks are arranged inside the passage H, and face in the opposite directions from the corresponding valve disks 7c and k. 7

As illustrated in Figs. 2 and 4, the valve disk is may be screwed onto the rod K to permit of vertical adjustment thereon in order to insure the perfect closure of the port 72 by the valve disk m when the port g is closed by said valve disk 70. A look nut 0 may be employed for holding the valve disk k at the proper adjustment on the rod K. This adjustment may also be employed for taking up wear on the valves or their seats, and may be applied to any of the other valve disks, if desired.

In practice the piston rod S is suitably connected to the valve or damper, or both,

of the steam boiler (not shown) in order that the movement of the piston 13 from right to left in Fig. 2 will open said damper or valve, while the movement" of'said piston in the opposite direction will close the dam per or valve. The normal position of the piston is to the left with the damper or valve open. Whenthe piston is in this po: sition the governor lever P is down and supported by the valve disks m and is resting upon their respective ports h and whereby said ports are closed. The other valve disks m and is are, consequently arranged away from their ports so that the live steam, fed to the chamber D from the boiler via pipe C, may enter the passage G through the port 9 and pass into the right hand end of the cylinder, via the branch passage G, so as to retain the piston at the left hand end of its stroke. Now, when the boiler pressure reaches a predetermined point, fixed by the position of the weightR on the governor lever, the steam pressure in the chamber D pressing upward on the valve disk m will overcome said weight and raise said lever to the dotted line position, Fig. 2', opening the ports h and g and closing the ports h andg. This operation cuts off live steam from the passage G and admits live steam to the passage H from which it passes to the left hand end of the cylinder via the branch passage H, thus forcing the piston to the right for closing the damper or valve to cut off the draft or fuel supply to the boiler. At the same time, the opening of the port 9 by the raising of the valve disk places the right hand end of the cylinder in communication with the exhaust chams ber E, so that as the piston moves to the right, it forces the exhaust gases into the said chamber E from which they escape through the outlet port T. r

The closing of the damper or'supply valve of the boiler will, of course, have a tendency to reduce the boiler pressure. When this pressure falls below the predetermined point again, it will no longer be able to overcome the weight- It and said weight, with its lever, will fall to the solid line position, Fig. 2 returning the valve disks carried by the rods K and M to their normal positions, whereupon the piston will be moved to the left again, the exhaustgases escaping from the left hand endof the cylinder via the branch passage H, passage H, chamber E and p t 3- Referring to Fig. 1, a group or battery of four regulators is there shown for controlling a like number of dampers or fuel supply valves of a large steam boiler. The piston rods S, S, S and S projecting-from the cylinders A, A, A and A are designed to be connected to different dampers or valves, as already described, so that each of said dampers or valves is controlled separately. The weights R, R, R and R are placed at different points along their respective governor arms, whereby the four regulators-will be actuated at different times and in succession from the left hand cylinder A to the right hand cylinder A, with the result that first one and then another of the dampers or supply valves will be closed determined point, or the fuel being turned on again into a heated combustion chamber, causing an explosion. It will be understood, of course, that any number. of regulator cylinders may be used together in this way, according to requirement. It will further be noted that changes may be made in the details of construction herein illustrated and described without departing from the spirit or sacrificing the advantages of my invention.

Having thus described" my invention, what I claim as new and desire to secure'by Letters Patent of the United States is:

1. An automatic regulator of the character described comprising. a cylinder, a piston therein, said cylinder having a pressure l'chamber, two passages leading therefrom to exhaust ports, and branch passages leading from the respective passages to opposite ends of the. cylinder, a governor member, rods connected'to said governor member and extending into said passages,valve disks on said rods adapted. to simultaneously close "the exhaust port of one passage and the other passage to the pressure chamber, and other valve disks on said rods for simulta-..

neously closing the firstpassage to the pressure chamber and the exhaust port of the second passage when the first mentioned valve disks are moved toop-en positions;

I 2. An automatic regulator ofthe' characterdescribed comprising a cylinder, a piston therein, said cylinder havlng a pressure chamber, two passagesleading therefrom to exhaust ports, and branch passages leading from. the respective. passages to opposite ends ofthe cylinder, a governor member,

rods connected to said governor member and extending into said passages, valve disks on said rods adapted to simultaneously close In this way thetinguished and steam dropping below a prethe exhaust port of one passage and the other passage to the pressure chamber, and other" valve disks on said rodsfor simultaneously closing the first passage to the pressure chamber and the exhaust port of the second passage when the first mentioned valve disks are moved to open positions, one of said valve disks being adjustable on its rod for the purpose specified.

3. An automatic regulator of the character described comprising a cylinder, a piston therein, said cylinder having a pressure chamber, two passages leading therefrom to exhaust ports, and branch passages leading from the respective passages to opposite ends of the cylinder, a governor member, rods connected to said governor member and extending into said passages, valve disks on said rods adapted to simultaneously close the exhaust port of one passage and the other passage to the pressure chamber, and other valve disks on said rods for simulta neously closing the first passage to the pressure chamber and the exhaust ports of the second passage when the first mentioned valve disks are moved to open positions, one or" said passages being flared and the valve disks on the rod which extends into it being arranged within said passage.

l. An automatic regulator of the character described comprising a cylinder, a piston therein, said cylinder having a pressure chamber, two passages leading therefrom to exhaust ports, and branch passages leading from the respective passages to opposite ends of the cylinder, a governor member, rods connected to said governor member and extending into said passages, valve disks on said rods adapted to simultaneously close the exhaust port of one passage and the other passage to the pressure chamber, and other valve disks on said rods for simulta neously closing the first passage to the pressure chamber and the exhaust ports of the second passage when the first mentioned valve disks are moved to open positions, one of said passages being flared and the valve disks on the rod which extends into it being arranged within said passage, while the valve disks on the other rod are arranged externally of the other passage.

5. An automatic regulator of the character described comprising a cylinder, a piston therein, said cylinder having a pressure chamber, and an exhaust chamber separated by a partition through which two passages are formed and in which there are also formed branch passages leading from the respective passages to opposite ends of the cylinder, a governor, rods connected to said governor and extending into the respective passages, said rods passing through and being guided by perforations in the wall of said exhaust chamber, and valve disks on said rods adapted to alternately close the passages at either side of the branch passages for the purpose specified.

6. An automatic regulator of the character described comprising a cylinder, a piston therein for connection with the device to be regulated, said cylinder having a pressure chamber formed therein, also two passages leading from said chamber and terminating in exhaust ports, and branch passages leading from the respective passages to opposite ends of the cylinder, a governor lever pivoted at one end and carrying an adjustable weight on the other end, two rods connected to said lever intermediate of its pivot and weight and extending into said passages, and valve disks on said rods adapted to alternately close the passages at either side of the branch passages for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two attesting witnesses.

HENRY V. BARRON.

Witnesses:

H. N. SIMrsoN, J. P. CUNNINGHAM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents,

Washington, D. C. 

